DOC AIRBUS | TSM A320FLoss of the Left Yellow Pressure Indication on the Triple Indicator (Electrical Failure)
TASK 32-44-00-810-802-A
Loss of the Left Yellow Pressure Indication on the Triple Indicator (Electrical Failure)
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 32-44-00-865-050-A
[Rev.8 from Aug 2018]
2026.04.04 04:31:42 UTC
Loss of the Left Yellow Pressure Indication on the Triple Indicator (Electrical Failure)
1. Possible Causes
- PRESS XDCR-BRK,YELLOW L [63GG]
wiring from the left Yellow brake pressure-transducer 63GG pins A/D, E to the first terminal block wiring from the left Yellow brake pressure transducer 63GG pin A/A to the first terminal block - PRESS XDCR-BRK, YELLOW L [101GG]
wiring from the left Yellow brake pressure-transducer 101GG pins A/D, E to the first terminal block wiring from the left Yellow brake pressure transducer 101GG pin A/A to the first terminal block
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 31-50-00-710-001 | Ground Scanning of the Central Warning System |
| ASM 324401 | |
| AMM 32-44-18-000-001 | Removal of the Pressure Transducers |
| AMM 32-44-18-400-001 | Installation of the Pressure Transducers |
| AMM 32-44-19-000-001 | Removal of the Pressure Transducer |
| AMM 32-44-19-400-001 | Installation of the Pressure Transducer |
Subtask 32-44-00-865-050-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 32-44-00-710-053-A 4. Fault Isolation| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | L/G/Y BRK/PRESS/IND | 61GG | C10 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | ABCU &/Y BRK/PRESS IND | 61GG | C10 |
NOTE: After all maintenance operations on the braking system such as hydraulic line disconnection/connection or component replacement, bleed from the brake units (Ref. AMM TASK 32-43-00-870-002).
Subtask 32-44-00-810-051-A ** ON A/C NOT FOR ALL A. If the test gives the maintenance message SDAC1 : LH Y BRK PRESS XDCR 63GG:
(a) Do a check and repair the:
Subtask 32-44-00-810-051-B ** ON A/C NOT FOR ALL - replace the PRESS XDCR-BRK,YELLOW L [63GG]
AMM 32-44-18-000-001 and
AMM 32-44-18-400-001
(a) Do a check and repair the:
wiring from the left Yellow brake pressure-transducer 63GG pins A/D, E to the first terminal block wiring from the left Yellow brake pressure transducer 63GG pin A/A to the first terminal block , ASM 324401.
A. If the test gives the maintenance message SDAC1 : LH Y BRK PRESS XDCR 101GG:
(a) Do a check and repair the:
Subtask 32-44-00-710-054-A - replace the PRESS XDCR-BRK, YELLOW L [101GG]
AMM 32-44-19-000-001 and
AMM 32-44-19-400-001
(a) Do a check and repair the:
wiring from the left Yellow brake pressure-transducer 101GG pins A/D, E to the first terminal block wiring from the left Yellow brake pressure transducer 101GG pin A/A to the first terminal block , ASM 324401.
B. Do the test given in Para. 3.B.